The One Where Chandler Gets Caught

S10 E10: When Phoebe and Rachel see Chandler getting into a car with a pretty woman during work hours, they follow him to the suburbs and witness him going inside a large house with the woman. Fearing that Chandler is cheating on Monica, they inform her--and learn that the woman is a real estate agent. The pair has been secretly shopping for houses and struggling with how to tell their best friends that they are leaving the City. In an emotional montage, clips from previous episodes highlight many of the experiences the friends have shared in Monica and Chandler's apartment.